Pack of 5, 5X20mm 250mA 125v/250v Fast Blow Ceramic Fuses, F250mA, 0.25 amp (3/16 inch x 3/4 inch) 250mA F250ma 250v, Ceramic 250 volts (also replaces 125v) This package has 5 pieces Dimension: 5 mm (3/16 inch) x 20 mm (3/4 inch) Ceramic Fuses, 250mA 125V/250V Fast Blow (Fast Acting Fuses)